receiving-cleaning-washing-grinding-separating-concentration and refining-dewatering-drying and packing
How to extract starch from sweet potato
1. Pretreatment of raw material
The pretreatment of raw material includes the raw material receiving, cleaning and washing section:
a. Raw material receiving section: Raw materials are the material basis of how to extract starch from sweet potato. The quality of raw materials is directly related to the quality of products. Therefore it will be better to choose high quality raw sweet potato without damage.
b. Sweet potato cleaning section: how to extract starch from sweet potato requires the raw material be cleaned thoroughly. For the cleanness of raw material has an influence on the following separation and purification of sweet potato starch. Dry sieve is used for cleaning process which can effectively remove the sand, soil, weed and other debris.
Sweet potato washing machine
c. Sweet potato washing section: The washing process is carried out by paddle washing machine for how to extract starch from sweet potato. sweet potato raw material is rolled along with the wall of the cylinder, and is sprayed, washed, bathed, mixed, and peeled with water as a medium for extraction of starch from sweet potato.
2. Extraction of sweet potato starch
a. Grinding section: The grinding unit is one of the most important part for how to extract starch from sweet potato which determines the sweet potato starch extraction rate. High-efficiency grinding machine allows the starch granules in sweet potato cells to be completely released, ensuring that the combined starch content in the sweet potato residue is minimized. DOING rasper is a high efficient machine which fully absorbs international advanced technology and has the features of high extraction rate and high grinding rate.
b. Separating section: Separating section is another key process for how to extract starch from sweet potato that affects the extraction rate of sweet potato starch. Its main purpose is to separate the fiber from starch. And the widely used separating machine includes centriguge sieve and fine fiber sieve. Good centrifugal sieve and centrifugal technology can allow the extraction of free starch from cassava cells.
c. Concentration and refining section: This process is for the concentration, recycling and refining of the starch milk. To ensure a better washing effect, DOING how to extract starch from sweet potato adopts 13-stage hydrocyclone station which can better remove the impurities of fiber, protein and other impurities contained in the starch milk. In this way, all the indicators of starch produced can be guaranteed to meet the standards.
Sweet potato starch dewatering machine
3. Dewatering and drying of sweet potato starcha. Dewatering section: For how to extract starch from sweet potato, the main function of this section is to dewater the refined starch. Due to the high water content of refined starch, it need to be dewatered in vacuum filter so as to reach the desired quality for the next drying section. As a high efficient machine, vacuum filter has the features of high dehydration rate, energy saving and stable operation.
b. Drying and packing section: The wet starch is then conveyed into air flow flash dryer for frying. The steam pressure is controlled at 0.8 MPa. The how to extract starch from sweet potato requires that the moisture content of the finished starch is about 13.5% after drying. Packing and warehousing requires a sufficient number of bags, and timely packing for storage.
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